Ill person
Invalid and ill person are semantically related. In some cases you can replace term "Invalid" with "Ill person", this terms are similar.
Invalid
Invalid noun - Someone who is incapacitated by a chronic illness or injury.
Ill person and invalid are semantically related. You can use "Ill person" instead a noun "Invalid".
Mutual synonyms
Cite this Source
Invalid and Ill person. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/ill_person/invalid
Ill person & Invalid. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/ill_person/invalid>.
Invalid or Ill person. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/ill_person/invalid.
Google Ngram Viewer shows how "ill person" and "invalid" have occurred on timeline